Description
BOLA screw couplings for GL 25 threads combine a PTFE connecting piece with PBTP screw caps for joining laboratory components that share the same GL thread size. Only PTFE contacts the medium, so the fluid path remains chemically inert. Each unit uses GL-threaded PBTP screw caps suitable up to +180 °C, a PTFE/FKM seal, and a PTFE connector body. For GL 25 the sealing-lip-to-sealing-lip length is 22 mm. Supplied as 1 pc with a net weight of 0,035 kg, this coupling from manufacturer Bohlender is built for equal-size GL thread connections on bottles, vessels, and transfer lines. The PTFE wetted surfaces support use with many solvents and reagents in analytical and preparative fluid handling, while the PBTP caps give mechanical strength for repeated assembly. The design keeps process media away from the outer cap polymer and helps form clean, leak-resistant joints wherever matching GL 25 ports must be linked in chemical and life-science laboratories.
This article is part of Screw caps & closures, in Stoppers, caps & closures.
Key features
- Pack size: 1 pc
- Material: Polytetrafluoroethylene (PTFE)
- Thread size: GL 25
- Length sealing lip to sealing lip: 22 mm
- Screw caps: PBTP (up to +180 °C)
- Seal: PTFE/FKM
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Questions about BOLA Threaded Couplings, GL 25 PTFE, PBTP nuts
What is this article?
BOLA Threaded Couplings, GL 25 PTFE, PBTP nuts is the article on this page. Luminix Health distributes Bohlender for laboratory use. It sits in Screw caps & closures, inside Stoppers, caps & closures, in Labware.
A screw cap has a thread and a liner. The thread has to match the bottle. The liner has to survive the liquid: a pulp liner fails in a solvent that a PTFE-faced liner ignores. The colour of the cap is not the specification.
A closure is the part that decides whether a bottle stays shut and whether the contents attack the seal. A ground-glass stopper matches a ground neck. A screw cap needs the right thread and a liner that survives the liquid. Rubber and silicone stoppers push into a mouth. The liner, not the colour of the cap, is the chemical choice. The vessels they close are indexed under ISO laboratory glassware.
Which category should I open next?
The category is Stoppers, caps & closures. The sub-category is Screw caps & closures. The catalogue is Labware.
Shelves beside this one are Rubber & silicone stoppers, Ground-joint glass stoppers, Lids & seals and Closures (other).
What should I check before I order?
When this page shows a safety data sheet, use that manufacturer file. Hazard text does not belong in the sales description. For a pack size, a grade or a certificate that is not on the page, send a quote request or contact the team.
How does ordering and shipping work?
Luminix Health distributes this article from the heart of Europe. Articles in stock ship within 2–5 business days. Standard delivery is free from €250 excl. VAT. Cold-chain goods and dangerous goods under ADR are never included in that free delivery. The terms are in the Shipping Policy. The full brand index is on shop by brand. Who we are is on about us.
Which other categories should I open?
The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.